Drop-forged box for roller-bearing hangers.



No. 710,487. Patented Oct. 7. I902.

C. J. MARBACH. DROP FORGED BOX FOR ROLLER BEARING HANGERS.

(Application filed June 6, 1902.)

(No Model.)

CHARLES J. MARBAOH, OF HARRISON,

NEvV JERSEY, ASSIGNOR TO HYATT ROLLER BEARING COMPANY, OF HARRISON, NEIV JERSEY, A CORPORA- TION OF NEIV JERSEY.

DROP-FORGED BOX FOR ROLLER-BEARING HANGERS.

SPECIFICATION formingpart of Letters Patent No. 710,487, dated October 7, 1902.

Application filed June 6,1902. Serial No. 110,411. (No model.)

To (1/7], whom, it may concern:

Be it known that I, CHARLES J. MAnnAcn, a citizen of the United States, residing at Mo Middlesex street, Harrison, county of Hudson, State of New Jersey, have invented certain new and useful Improvements in Drop-' Forged Boxes for Roller-Bearing Hangers, fully described and represented in-the following specification and the accompanying d raw- 0 ings, forming a part of the same.

In the manufacture of roller-bearings the casing or box of the bearing in which the rollers revolve is subjected to the pressure concentrated upon the cylindrical periphery of the rolls and is thus very liable to wear or disintregation. There the size of the rolls and easing have been increased to reduce the pressure concentrated upon such parts, the box in which the rolls revolve has sometimes .20 been made of cast-iron but as such material is of a granular character the particles wear off from the box and impede the free movement of the rolls. To obviate such wear of the cast-iron surface, it is common to press a 2 5 thin shell of sheet-steel into a cast-iron casing to furnish a smooth steel surface for supporting the rolls; but such construction involves the boring of the cast-iron and the careful shaping of the steel shell to a semi- 0 cylindrical or cylindrical shape to accurately support the rolls. To obviate this duplex construction and the labor involved in fitting up such a steel-lined box, a shaft-hanger box for spring roller-bearings was patented on 5 March 3, 1896, with No. 555,510, the box being formed of a trough of sheet-steel with a casting applied to the center to support the same in a hanger and cast-iron collars attached to its opposite ends to retain the rolls within the box. Such construction furnishes a steel bearing-surface for the antifrictionrolls, but also involves a complex construction and the fitting up and fastening together of the various parts.

The object of the present invention is to secure the advantages of a steel construction without the necessity of attaching separate collars to the opposite ends of the box to hold the rolls in place. I accomplish this object by forming the box in semicylindrical halves, each of a single steel drop-forging, with integral collars projected inwardly at opposite ends to hold the rolls in place and a suitable enlargement upon the middle of the box to reinforce it where it is supported in the hanger. Two of such half boxes may be readily fitted together to form a cylindrical casing for supporting the rolls about the shaft or journal and clamped together and held in place within a hanger-frame by any of the means ordinarily used in such constructions.

In forming the half-box of a drop-forging the middle portion of the half-box can be readily made of greater thickness than the ends to reinforce the box where it is grasped or supported in the hanger, and two integral flanges can be readily formed within each end of the box, with an annular channel between such flanges to serve as an oil-retainer and also to hold a packing for preventing the access of dust and grit to the hearing.

In the annexed drawings, Figure I shows the outer side of the half-box. Fig. 2 is an edge view of two such half-boxes fitted together with the upperone in section at the center line. Fig. 3 shows the inner side of the half-box; Fig. 4, a transverse section of the same at the middle, with dotted lines indicating eight rolls within the roll-chamber; and Fig. 5 is an end view of the box with projections at opposite edges, forming two parallel seats.

The box is shown with semicylindrical enlargement or band a at the middle of its length and the metal gradually reduced in thickness from the band a toward each end of the box, where a slight enlargement b is formed upon the exterior. Integral flanges c and d of semi-annular shape are formed upon the interior of the box at the ends,with a semi- 9o annular channel 6 between the same, the space between the flanges c forming the semicylindrical roll-chamber f, in which the rolls are fitted, as indicated by the dotted linesg in Fig. 4.

The enlargement 1) upon the exterior of the box at each end surrounds the semi-annular channel 6 and slightly reinforces the strength of the box at this point, where the end thrust, if any, is usually imposed upon the bearing :00 by collars upon the shaft-journal.

Each of the views shows a half-box, excepting Fig. 2, which shows two of the boxes placed together to form a complete chamber f, which would wholly surround the shaftjournal and keep the rolls g in the proper relation thereto. The entire box may be held in the hanger in any suitable manner, the half-boxes in the drawings each being shown provided with a recess t' upon the band a to receive the points of opposed set-screws, such as are commonly employed in hangers,to supportand adjust the box.

The joint of the two half-boxes may be provided with dowels, or any other means may be used to hold them in line irrespective of the set-screws referred to.

In Fig. 5 projections h are shown at opposite edges. of the box upon the band a, forming parallel seats adapted to fit in the usual manner between guides upon a hanger; but such seats represent only a modification of the present invention and are not, therefore, shown in the other figures.

Each entire half-box consists of a single piece, its different features and parts being formedintegral with one another in the operation of forging the same.

In the operation of drop-forging two opposed dies are employed, which can be readily kept in good order and accurately fitted to one another, and the die which forms the chamberf can be readily made by turning the semicylindrical part of the die in a turning-lathe and making it hard and true in form. By the use of such dies the chamber fcan be made true in its form and dimensions, so as to operate in the desired manner with the antifriction rolls f. The operation of drop-forging consolidates the metal, and thus forms a smooth dense surface upon the wall of the chamber f, which is exceedingly different from the granulated surface of a plain cast-iron box, and therefore much more durable in operation.

This invention thus provides a hanger-box which has the advantages of a box formed of sheet-steel with cast-iron attachments or of a cast-iron box with a sheet-steel lining and is readily produced at much less cost than either of those constructions, as it consists of a single piece formed by a process which is cheap and expeditious, while it produces an accurate form in the object.

My invention thus secures many advantages over any hanger-box heretofore made to support antifriction-rolls.

Having thus set forth the nature of the invention, what is claimed herein is 1. As a new article of manufacture a halfbox for roller-bearings, consisting of an integral wrought-metal casing having a semicylindrical roll-chamber f to receive antifriction-rolls, two integral flanges c and d projected inwardly at each end of the box as set forth with a semi-annular channel ebetween the same, and the metal of the box being reduced gradually in thickness from the middle toward the opposite ends, as and for the purpose set forth.

2. As a new article of manufacture a halfbox for roller-bearings, consisting of an integral wrought-metal casing having a semicylindrical roll-chamber f to receive antifriction-rolls, two integral flanges c and cl projected inwardly at each end of the box with a semi-annular channel e between the same, and the metal of the box being reduced gradually in thickness from the middle toward the opposite ends, and the exterior of the halfbox at each end having the enlargement b upon the line of said semi-annular channel, as and for the purpose set forth.

3. As a new article of manufacture a halfbox for roller-bearings, consisting of an integral wrought-metal casing having a semicylindrical roll-chamber f to receive antifriction-rolls, two integral flanges c and (Z projected inwardly at each end of the box as set forth with a semi-annular channel 6 between the same, a cylindrical enlargement a upon the half-box at the middle of its length, and the metal of the half-box being reduced gradually in thickness from such cylindrical enlargement toward the opposite ends, and the exterior of the half-box at each end slightly enlarged upon the line of the said semi-aunular channel, as and for the purpose set forth.

4:. As a new article of manufacture a halfbox for roller-bearings, consisting of an inte-' gral wrought-metal casing having a semicylindrical roll-chamber f to receive antifriction-rolls, two integral flanges c and cl projected inwardly at each end of the box as set forth with a semi-annular channel a between the same, a cylindrical enlargement it upon the half-box at the middle of its length with projections h forming parallel seats at the 0pposite edges of the box, the metal of the halfbox being gradually reduced in thickness from such cylindrical enlargement toward the opposite ends of the box, and the exterior of the box at each end slightly enlarged upon the line of the said semi-annular channel, as and for the purpose set forth.

5. As a new article of manufacture, a roller* bearing comprising two half-boxes, consisting each of an integral wrought-metal casin g having a semicylindrical roll-chamber f, a series of cylindrical antifriction-rolls g in the rollchamber, two integral flanges c and (1 projected inwardly at each end of the box a distance corresponding to the diameter of such rolls, with an annular channel between the said flanges, and the metal of the box being reduced gradually in thickness from the middle toward the opposite ends, as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CHARLES J. MARBAOH.

Witnesses:

ALFRED P. OLAUP, THOMAS S. CRANE. 

